Home / Products / Pharmaceutical Impurity Reference Standards

Product Category

Pharmaceutical Impurity Reference Standards

Process impurities, degradation products and genotoxic impurity reference standards with full characterization.

Lercanidipine Impurity 35 structure

Lercanidipine Impurity 35

CAS: 1441-58-3

In Stock97%+

Ritonavir Diamino Alcohol Impurity structure

Ritonavir Diamino Alcohol Impurity

CAS: 144163-44-0

In Stock97%+

Ledipasvir Impurity 7 structure

Ledipasvir Impurity 7

CAS: 1441670-89-8

In Stock97%+

Rocuronium Impurity N1 structure

Rocuronium Impurity N1

CAS: 144209-33-6

In Stock97%+

Efinaconazole Impurity H structure

Efinaconazole Impurity H

CAS: 144282-55-3

In Stock97%+

Brivudine Impurity 12 structure

Brivudine Impurity 12

CAS: 144301-84-8

In Stock97%+

Brivudine Impurity 13 structure

Brivudine Impurity 13

CAS: 144301-85-9

In Stock97%+

Safinamide impurity 01 structure

Safinamide impurity 01

CAS: 1443302-79-1

In Stock97%+

Ezetimibe Impurity 47 structure

Ezetimibe Impurity 47

CAS: 1443306-85-1

In Stock97%+

Levodopa Impurity 10 HCl structure

Levodopa Impurity 10 HCl

CAS: 144334-59-8

In Stock97%+

Abacavir EP Impurity D HCl structure

Abacavir EP Impurity D HCl

CAS: 1443421-67-7 (free base)

In Stock97%+

Abacavir EP Impurity F structure

Abacavir EP Impurity F

CAS: 1443421-68-8

In Stock97%+

Abacavir EP Impurity B structure

Abacavir EP Impurity B

CAS: 1443421-69-9

In Stock97%+

Larotrectinib Impurity 1 HCl structure

Larotrectinib Impurity 1 HCl

CAS: 1443624-23-4

In Stock97%+

Gliclazide Impurity 2 (Methyl Tosylcarbamate) structure

Gliclazide Impurity 2 (Methyl Tosylcarbamate)

CAS: 14437-03-7

In Stock97%+

Vitamin A Impurity B(Mixture of E/Z Isomers) structure

Vitamin A Impurity B(Mixture of E/Z Isomers)

CAS: CATO-C1305354

In Stockpurity>90%

Cefazedone Impurity 1 Sodium Salt structure

Cefazedone Impurity 1 Sodium Salt

CAS: 14441-14-6

In Stock97%+

Trandolapril Impurity 3 (2S,3aR,7aS) structure

Trandolapril Impurity 3 (2S,3aR,7aS)

CAS: 144540-71-6

In Stock97%+

Benzofuran Impurity 3 structure

Benzofuran Impurity 3

CAS: 1446090-77-2

In Stock97%+

Betiatide impurity D CRS structure

Betiatide impurity D CRS

CAS: 144616-07-9

In Stock97%+

Linagliptin impurity N2 structure

Linagliptin impurity N2

CAS: 1446263-39-3

In Stock>95%

Vortioxetine Impurity 37 structure

Vortioxetine Impurity 37

CAS: 1446751-00-3

In Stock97%+

Dosulepin EP Impurity A structure

Dosulepin EP Impurity A

CAS: 1447-71-8

In Stock97%+

Methadone Impurity A structure

Methadone Impurity A

CAS: 14474-54-5

In Stock97%+

Topiroxostat Impurity N1 structure

Topiroxostat Impurity N1

CAS: 14478-73-0

In Stock97%+

Mequitazine Impurity 1 structure

Mequitazine Impurity 1

CAS: 144827-80-5

In Stock97%+

Mequitazine Impurity 2 structure

Mequitazine Impurity 2

CAS: 144827-81-6

In Stock97%+

Crizotinib Impurity 11 structure

Crizotinib Impurity 11

CAS: 1448326-32-6

In Stock97%+

Esomeprazole Impurity 02 structure

Esomeprazole Impurity 02

CAS: 53065-28-4

In Stock97%+

Calcitriol Impurity 29 structure

Calcitriol Impurity 29

CAS: 144848-24-8

In Stock97%+

Ciprofibrate Impurity 1 structure

Ciprofibrate Impurity 1

CAS: 144900-34-5

In Stock97%+

Pyrantel EP Impurity B HCl structure

Pyrantel EP Impurity B HCl

CAS: 1449108-90-0

In Stock97%+

Emtricitabine Impurity 32 structure

Emtricitabine Impurity 32

CAS: 145032-08-2

In Stock97%+

Rivaroxaban Impurity 64 structure

Rivaroxaban Impurity 64

CAS: 1450915-93-1

In Stock97%+

Vilazodone Impurity 6 structure

Vilazodone Impurity 6

CAS: 1451194-34-5

In Stock97%+

Tegaserod Impurity 1 structure

Tegaserod Impurity 1

CAS: 145158-71-0

In Stock97%+

Disulfiram Impurity 2 structure

Disulfiram Impurity 2

CAS: 145195-14-8

In Stock97%+

Heptachlor epoxide Impurity 2 structure

Heptachlor epoxide Impurity 2

CAS: 145213-11-2

In Stock97%+

Heptachlor epoxide Impurity 3 structure

Heptachlor epoxide Impurity 3

CAS: 145213-12-3

In Stock97%+

Voriconazole Impurity 92 structure

Voriconazole Impurity 92

CAS: 145240-42-2

In Stock97%+

Silodosin Impurity N44 structure

Silodosin Impurity N44

CAS: 1453221-45-8

In Stock97%+

Pregabalin Impurity 116 structure

Pregabalin Impurity 116

CAS: 145328-03-6

In Stock97%+

Alvimopan Impurity 18 structure

Alvimopan Impurity 18

CAS: 145340-45-0

In Stock97%+

N-(3-Chloro-2-fluorophenyl)-7-methoxy-6-nitroquinazolin-4-amine (Dacomitinib Impurity) structure

N-(3-Chloro-2-fluorophenyl)-7-methoxy-6-nitroquinazolin-4-amine (Dacomitinib Impurity)

CAS: 1454307-45-9

In Stock97%+

N-Nitroso Caffeine EP Impurity E structure

N-Nitroso Caffeine EP Impurity E

CAS: 145438-96-6

In Stock97%+

Zolpidem Impurity 5 structure

Zolpidem Impurity 5

CAS: 14547-80-9

In Stock97%+

Perindopril Impurity 18 structure

Perindopril Impurity 18

CAS: 145513-30-0

In Stock97%+

Perindopril Impurity 19 structure

Perindopril Impurity 19

CAS: 145513-34-4

In Stock97%+

Perindopril Impurity 20 structure

Perindopril Impurity 20

CAS: 145513-36-6

In Stock97%+

Perindopril Impurity 16 structure

Perindopril Impurity 16

CAS: 145513-45-7

In Stock97%+

Perindopril Impurity N4 structure

Perindopril Impurity N4

CAS: 145513-54-8

In Stock97%+

Perindopril Impurity 17 structure

Perindopril Impurity 17

CAS: 145513-55-9

In Stock97%+

Atogepant Impurity N17 structure

Atogepant Impurity N17

CAS: 1455358-16-3

In Stock97%+

Tryptophan EP Impurity F structure

Tryptophan EP Impurity F

CAS: 145545-23-9

In Stock97%+

Ropinirole EP Impurity C HCl structure

Ropinirole EP Impurity C HCl

CAS: 145570-92-9

In Stock97%+

Tranylcypromine Impurity 1 structure

Tranylcypromine Impurity 1

CAS: 14561-40-1

In Stock97%+

Alvimopan Impurity 28 structure

Alvimopan Impurity 28

CAS: 145678-87-1

In Stock97%+

Ubrogepant Impurity 1 structure

Ubrogepant Impurity 1

CAS: 1456803-37-4

In Stock97%+

Edaravone Impurity N4 structure

Edaravone Impurity N4

CAS: 14575-62-3

In Stock97%+

Miglitol Impurity N1 structure

Miglitol Impurity N1

CAS: 1459288-93-7

In Stock97%+

Promazine EP Impurity A structure

Promazine EP Impurity A

CAS: 146-21-4

In Stock97%+

Carbaryl Impurity 12 structure

Carbaryl Impurity 12

CAS: 146074-42-2

In Stock97%+

Risdiplam Impurity 9 HCl structure

Risdiplam Impurity 9 HCl

CAS: 1462383-16-9

In Stock97%+

Valproic Acid Impurity 12 structure

Valproic Acid Impurity 12

CAS: 14636-95-4

In Stock97%+

Efinaconazole Impurity N1 structure

Efinaconazole Impurity N1

CAS: 146432-17-9

In Stock97%+

Tenofovir Impurity C13 structure

Tenofovir Impurity C13

CAS: 1464851-21-5

In Stock97%+

Lacosamide Impurity C59 structure

Lacosamide Impurity C59

CAS: 1466-67-7

In Stock97%+

Dantrolene Impurity 5 structure

Dantrolene Impurity 5

CAS: 14663-28-6

In Stock97%+

Phenylephrine Impurity 10 structure

Phenylephrine Impurity 10

CAS: 14665-75-9

In Stock97%+

Aceglutamide impurity structure

Aceglutamide impurity

CAS: 1468-52-6

In Stock97%+

Risperidone impurity 01 structure

Risperidone impurity 01

CAS: 146801-00-5

In Stock97%+

Riboflavin Impurity 37 structure

Riboflavin Impurity 37

CAS: 14684-48-1

In Stock97%+

Deferasirox Impurity 12 structure

Deferasirox Impurity 12

CAS: 14685-90-6

In Stock97%+

Azilsartan Impurity N4 structure

Azilsartan Impurity N4

CAS: 146897-17-8

In Stock97%+

Frovatriptan EP Impurity A structure

Frovatriptan EP Impurity A

CAS: 146993-12-6

In Stock97%+

Macitentan Impurity 28 structure

Macitentan Impurity 28

CAS: 147000-89-3

In Stock97%+

Dorzolamide Impurity 18 structure

Dorzolamide Impurity 18

CAS: 147086-81-5

In Stock97%+

Dorzolamide Impurity 20 structure

Dorzolamide Impurity 20

CAS: 147086-83-7

In Stock97%+

Rosuvastatin Impurity 21 structure

Rosuvastatin Impurity 21

CAS: 147118-27-2

In Stock97%+

Rosuvastatin Impurity 20 structure

Rosuvastatin Impurity 20

CAS: 147118-28-3

In Stock97%+

Bestatin Impurity 5 structure

Bestatin Impurity 5

CAS: 147169-48-0

In Stock97%+

Irbesartan Impurity N69 structure

Irbesartan Impurity N69

CAS: 147225-68-1

In Stock97%+

Ertapenem Impurity C28 structure

Ertapenem Impurity C28

CAS: 147266-92-0

In Stock97%+

Ibuprofen Impurity 1 structure

Ibuprofen Impurity 1

CAS: 147283-87-2

In Stock97%+

Prilocaine Impurity N3 structure

Prilocaine Impurity N3

CAS: 147372-41-6

In Stock97%+

Cholesterol Impurity 12 structure

Cholesterol Impurity 12

CAS: 1474-14-2

In Stock97%+

Azilsartan Impurity 2 structure

Azilsartan Impurity 2

CAS: 147403-65-4

In Stock97%+

Azilsartan Impurity N3 structure

Azilsartan Impurity N3

CAS: 147404-82-8

In Stock97%+

Pitavastatin Impurity N1 structure

Pitavastatin Impurity N1

CAS: 147511-70-4

In Stock97%+

Thioridazine EP Impurity E structure

Thioridazine EP Impurity E

CAS: 14759-06-9

In Stock97%+

Fluphenazine EP Impurity B structure

Fluphenazine EP Impurity B

CAS: 1476-79-5

In Stock97%+

Glycyrrhizic Acid Impurity N1 structure

Glycyrrhizic Acid Impurity N1

CAS: 1477-44-7

In Stock97%+

Clomiphene Impurity 9 structure

Clomiphene Impurity 9

CAS: 14770-94-6

In Stock97%+

Erythromycin estolate Impurity G structure

Erythromycin estolate Impurity G

CAS: 147702-49-6

In Stock97%+

Cholic Acid Impurity 22 structure

Cholic Acid Impurity 22

CAS: 14772-97-5

In Stock97%+

Cholic Acid Impurity N77 structure

Cholic Acid Impurity N77

CAS: 14772-99-7

In Stock97%+

Istradefylline Impurity 8 structure

Istradefylline Impurity 8

CAS: 14773-40-1

In Stock97%+

Repaglinide Impurity O structure

Repaglinide Impurity O

CAS: 147770-03-4

In Stock97%+

Trimethoprim Impurity 3 structure

Trimethoprim Impurity 3

CAS: 14779-44-3

In Stock97%+

Linagliptin Impurity 75 structure

Linagliptin Impurity 75

CAS: 14785-95-6

In Stock97%+

« Prev 1…13 14 15 16 17…80 Next »